The practice and experience at home and abroad as well as the measures of city water conservation were discussed.

The water shortage and cost of sewage treatment compels every city to implement water conservation to achieve the sustainable development of society.

In order to know the water consumption of chemical industry and pectro-chemical engineering in China,and provide basis for the implementation of national water-saving policies,the design data of water consump-tion for more than 200 projects undertaken by design departments of chemical and pectrochemical system science the year 2000 were collected,statisticed and analyzed.

So, the depth knows about the water resource essential features, Adopt the correct use water water-saving countermeasure,are Very important to our country economy , society and environment harmonizes sustainable development.

The Research of the Construction and Perfection of the Water-saving System in Our Country;

Promoting agricultural water- pricing reform to accelerate water saving in irrigation district;

Strengthening the management of water resources, carrying out water planning and water saving policy;

According to the analysis of contaminative source of CWM production,and the vice of sewage purification in building workshop now,we put forward a new train of thoughts of sewage reclaim,so the cleanly production and water saving were realized.

Agricultural water conservation is to increase the efficiency of water use,water conservation the key role of the price lever to agricultural water conservation limited effectiveness,improve field canal construction to reduce agricultural water losses and waste of water conservation is the key.

By means of investigation and survey of big water consumers in the province,problems with water conservation work are found and solutions or measures are presented for improving the work of water conservation.

The low price for urban water supply, however, has not only been affecting seriously the formation of a water conservation society, but been restraining the sound development of the industry for urban water supply and drainage, making it necessary to adjust the water price.